Advertisements
Advertisements
प्रश्न
What is meant by ozone depletion?
थोडक्यात उत्तर
उत्तर
- Ozone is present in the upper layer of the atmosphere called the stratosphere. It protects the earth from harmful ultraviolet rays of the sun.
- Some air pollutants, like chlorofluorocarbon (CFC), react with ozone present in the atmosphere. These pollutants reduce the density of the air.
- The ultra-violet rays from the sun reach directly on the earth, which affects human health, causing skin diseases and cancer and also increase the earth’s temperature.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
What is wind?
Name two air pollutants which affect our health.
Name two air pollutants which cause acid rain.
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
With whom should I pair up?
Group A | Group B | ||
1 | Air | a | Excretion |
2 | Water | b | Scattering of light |
3 | Soil | c | Plasticity |
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Name a device which uses wind energy to generate electricity.
What is global warming?
Do sailors need the help of wind to sail?
About 78% of the volume of air is ______.